DOWELD, A. B. Protaeropsis, a new replacement generic name for fossil Sphenaster Jeffery, 1999 (Echinoidea: Spatangida) nec Wilcoxon, 1970 (Protista: Haptomonada). Zootaxa, Auckland, New Zealand, v. 4139, n. 3, p. 421–423, 2016. DOI: 10.11646/zootaxa.4139.3.6. Disponível em: https://mapress.com/zt/article/view/zootaxa.4139.3.6. Acesso em: 22 may. 2025.